What does the term “ground rush” mean in skydiving?

The term "ground rush" in skydiving refers to the increasing perception of speed and proximity to the ground during freefall. As a skydiver drops from altitude, the ground appears to approach at an accelerating rate, which can create a thrilling sensation. This experience is particularly pronounced as the altitude decreases rapidly and the visual perspective changes.

Understanding ground rush is crucial for skydivers, as it contributes to the adrenaline rush associated with high-speed descent. It affects how jumpers perceive their surroundings and time the deployment of their parachutes effectively. Being aware of the ground rush phenomenon helps skydivers manage their emotional response, calculate decision-making time, and ensure a safe parachute deployment at the appropriate altitude.

The other options relate to different sensations experienced during skydiving but do not define ground rush accurately.